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📌Attachments to the Fibular Head
- Biceps femoris tendon and lateral collateral ligament attach laterally
- Arcuate and fabellofibular ligaments attach posteromedially
- Popliteofibular ligament attaches most medially
✅ Fibular Head Fractures as Clues to PLC Injury
- Avulsion fractures of the fibular head (arcuate fractures/sign) occur at PLC component attachment sites
- Their location and size help predict the injured structure
✅ Fracture Patterns and Injured Structures
- Diffuse/lateral fibular head fracture = fibular collateral ligament or biceps femoris injury
- Small styloid fracture = popliteofibular or arcuate ligament injury
✅ Arcuate Complex Avulsions
- Common pattern involves styloid process at arcuate complex attachment
- 1-8mm fragment displaced medial/superior to styloid = arcuate or popliteofibular ligament injury
RadioGraphics 2016; 36:1776–1791
RadioGraphics 2014; 34:496–513
Radiol Clin North Am. 2018 Nov;56(6):935-951
"Visualizing MSK Radiology: A Practical Guide to Radiology Mastery"
© 2022 MSK MRI Jee Eun Lee All Rights Reserved.
No unauthorized reproduction, redistribution, or use for AI training.
#posterolateralcornerinjury, #fibularheadfracture, #arcuatefracture, #arcuatesign, #popliteofibularligamentinjury, #arcuateligamentinjury, #fabellofibularligamentinjury, #lateralcollateralligamentinjury, #bicepsfemoristendoninjury, #avulsionfracture
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| (Fig 3-B.17) Partial Popliteofibular Ligament Tear (0) | 2024.05.22 |
| (Fig 3-B.16) Popliteofibular Ligament Anatomy (0) | 2024.05.22 |
| (Fig 3-B.15) Popliteus Tendon Avulsion Fracture (0) | 2024.05.21 |